Black and White Cross Back Plus Size Tankini Swim TOP 83% Nylon / 17% Lycra Modern, updated plus size swimsuit top Lightly padded soft-cup bra molds and shapes beautifully with a 1 inch elastic band around front and back for extra support Comfortable, 1 1/4 inch straps with X- Back design A size 18W top, side length, measures 15 inches from below the underarm to the hem